Carbureter.



J. W. PARKIN.

GARBURETER. 4

APPLICATION FILED SEPT. 29, 1909.

Patented iDec. 30, 1913.

INVENTOR PATENT onirica.

JOSEPH 'W'. PARKIN, 0F PHILADELPHIA, PENNSYLVANIA.

CARBURETER.

Speccaton of Letters Patent.

Patented Dee. 3o, 1913.

I Application led September 29, 1909. Serial No. 520,141.

To all whom it may concern:

citizen of the United States, residing `at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain lnew and useful Improvements in Carbureters, of which the following is a specification. 4. u

, The object of my invention is to provide a novel, simple and efficient carbureter vfor explosive engines, whereby the explosive mixture of commingled air and vaporized oil maybe properly supplied to the engine during different speeds thereof.

The invention consists in the novel construction and combinations' of parts hereinafter fully described and particularly claimed. In the drawings z-Figure 1 is a longitudinal vertical section, partly broken away, of my improved invention. Fig. 2 is an elevation of a portion ofthe hand operated mechanism, forming a' continuation ofthe construction shown in Fig. `1.

9 designates a mixing chamber in which the vaporized oil and air `are commingle-d in forming theexplosive mixture to be supplied to the engine. The mixing lchamber 9 is provided with a vertical extension 1 0 forming an utlet opening 1l. The upper end of the extension 10 is provided with a -tlange 12 by means of which the extensionV 10 Imay be secured 'to an explosive engineIA lthe collar 27 is a collar 29 between which and with the upper end 11 in, registry with the passageway of the engine leading to the cylinder or cylinders thereof for the purpose of supplying the explosive mixture thereto. During the operation of thev engine, the piston in the cylinder thereof is reciprocated, and at certain, intervals communication is established between the chamber 9 and the cylinder of the engine whereby, during the movement of the piston within the cylinder, a charge yof the explosive mixture is drawn from the mixing chamber into the engine cylinder and is. thereafter ignited to eifect the operation of the engine.

The construction of an explosive engine and its operation in drawing an explosive mixture from a carbureter is common and well known, and no detailed description thereor` is deemed necessary herein.

The mixing chamber 9 is provided with a lateral extension 13 having a circular opening in the upper portion thereof into which is fitted a ring '14 within which a valve j i opening 15 is formed to aiortkcommunica- Be 1t known that I, J osnPH W. PARKIN, a

tion between the mixing chamber 9 and the openl air. The ring .14 is provided with a valve seat 1f) and a circular flange 17 lhaving a tapering inner wall which extends down.- wardly and outwardly from the valve seat 16. The upper portion of the extensio 1.3 of the mixing Achamber is provided with projecting lugs 1-8 and 19 having a lspace therebetween and through which extends a screw 2O by means of which` the lugs 18 and 19 may be drawn-toward each other to clamp the ring 14 within the upper portion of the `extension 13. Thus the ring 14 forms in effect a part of said extension.

- Closing the valve opening 15 is an inwardly opening valve 22 fitted to the valve seat 16. The valve 22' is provided with an upwardly projecting stem 23 and a head 24 on the upper end of the stem 23. The

stem 23 is i'itted to a guide tube 25, which proj ects'upwardly from arms 26 formed on and extending inwardly fromthe ring 14. Thus the stem 23 is guided by the tube 2 5 to maintain the valve 22 in line with the. valve seat 16 and permit it to be moved into land from engagement therewith. Surrounding the tube 25 and valve stem 23 is a collar 27, and interposed between the end of the collar 27 and the head 24 on the valve stem is a spring 2,8 which encircles said stem.

lSurrounding the`stem 23, the tube 25, and

23. The collar 29 is provided with an upf wardly extending housing or guard which incloses the springs 28 and 30 and adjacent parts; andV the collar 29 is also externally screw-threaded andscrewed into a boss 3 1 formed on a bracket 32, which is secured to p and projects upwardly lfrom the ring 14. lt will thus be seen that by turning the collar 29 it may be adjusted upon the bracket 32 longitudinally of the stem 23 toward and vfrom the head 24 in a manner to regulate or vary the pressure of the spring 30 for a purpose hereinafter explained.

1n order to maintain the collar 29 in p0- sitions of'adjustment, I provide around the lower portion thereof a series of suitably spaced vertical. grooves 33 adapted to be engaged by the inner end'of ahead 34 on theA inner end of a pin 35 arranged 'within an opening 36 in a projection on the bracket 32. The pin-35 and its head 34 are pressed ed on Y larm of the bell-crank lever 42 is pivoted to' .normally toward the collar 29 by the action placement from the position to `which it is adjusted. L, The collar 27 is mounted t" ide longitudinally upon the guide tube 5 and the lower fend of the collar 27 rests upon the bifurcated arm 38 of a lever ;39 vwhich is fulcrumed on the bracket 32; the other arm 40 of the lever39 is pivoted to Ioiie epd ofv a ro'd.41. `The other end of the rod 41 is con-v nected to one arm :of a bell-crank lever42. pivoted to a bracket 43 which may be mountany convenient support. The other the lower end ofa'rod 44, fthe upper endof' which is p ivotedto a hand ievera.- .This

hand lever 45 is pivoted, as at 46, to a bracket 47 which may be mounted on any suitable j support. The. freeI end of'the lever 45 is.

handle 48 by means provided with |suitable be raised and lowered of which the lever may ,s 'on its pivot 46.. The lever 45 is provided with a latch arm 49, which is pivoted there;

i sector 52 by the to, as at 50, and which extends to aposition below the handle'48. The latchl arm 49. is provided vwith a` laterally projecting tooth 49a which is adapted to engage notches 51 formed in a sector52 which is formedon the bracket 47...,4 The tooth 49u of the latch arm 49 -is forced toward the notches 51 in the action of a spring 53 interposed between the` handle 48 and the latch arm 49. One end of the spring 53 extends into an opening in the'handle 28,'while the other end 'of the spring 53`en`circles a short pin projecting from the latch arm 49.

From the construction just described it will be seen that if the latch arm 49 be I pressed toward the handle 48, the tooth 49a will be disengaged from the sector 52, and

that the lever 45 may then be raised and sector 52.

' sure of the sprin lowered on its pivot 46 to any desired position in which it may be retained by freeing thelatch' arm 49 and permitting the tooth 49 to, engage one of the notches 51 of the It will also be seen that if the lever 45 be raised or lowered thecollar 27 will also be raised or lowered throughtlie rod and lever 'connections 44, 42, 41 and 39.v

By thus raising the collar. 27 the upper end of the spring 28 lmay be moved lintov or from engagement with the heaiy 24, and thepres- 28 against the head cylinderl Vof the 'engine mixture fort may be varied er the. Spring h asbn,

respect to -.the,sec torf52gnot 'only epasa@ defenseman vit moved into engagement therewith for a purpose hereinafter described.

- The mixing chamber 9 is provided with a' downwardly extending tubular" ortion 54 having an open bottom which a ords communication between the mixing chamber 9 and the open air.`

Supported adjacent tubular portion y54 is an oil chamber 55 having an 011 inlet opening -63 connected to a suitable source of oil supply.

opening into portion 54. A

the usual manner.

The operation of lows: As the explosive engine draws-a charge of thev explosive mixture,y from the mixing chamber -9 by the `action of the piston in--the vacuum therein, a quantity of airis dr'awn -into the mixing chambethrough the lower openend of the tubular extension 54'thereof,

and at the same time a quantity'of oil is drawn into. he mixing chamber 9 from the discharge end of the nozzle 61- and is at the ,same time vaporized bythe action of the air While 'the entering the mixing chamber.

The chamber 55 has anl extension 62 provided with a discharge nozzle 61 y .thelower end ofthe tubular v constant level of 'oil is maintained atthe discharge' end of the nozzle 61 a ioat 68 within the chamber 55 op`erat ing a valve which controls the opening 63 in the carbureter is as fol- ,tending to create a i air and oil are being drawn into the mixing chamberQ as just described, additional air4 is being drawn into the chamber through, the

valve opening 15, the action of'the piston in tending to create a vacuum in the cylinder drawing the valve 22 away from, its seat 1 6 against the action of one or both of lesive mixture of vaporized oil and air is supplied to the engine during the operation thereof. During the operation of the engine, the .greater the speed thereof, the greater is the tendency of the` iston to create a vacuum in the cylinder in rawing in the explosive charge, and therefore, in order to preserve as nearly as possible the proper proportion of mixture o fvaporized oil and air, the two springs 28 and 30 are provided, Which-may be adjusted to. vary the spring pressure 'acting upon the valve 22 to hold it a' ainstits seat. 'That is to say, if it be de slred to run the engine at a slow speed, the

the4 springs 28 and-30. Thus the required exlever 45 will be lowered'to lower the collar 12o. will be the proper amount otpressure upon the valve 21 to produce the proper explosive e desired speed ofthe engine. When however, it is deslredto.4 the engineat high`-speed,the lever 45 is adjpsted in tobrin" the thehea 24,

but also `to bring it into en the head with suicient pressure, which, in

gagement with conjunction with the pressure of the spring 3.0, will resist-the tendency to open the valve 21 sufiiciently speed from drawlng to prevent the engine atA high an excess amount of'air into the explosive mixture through the valve opening 15. It will employment of the thus be seen that by the springs 28 and 30, and

their co-acting parts, a Wide range of adjustment .of the pressure agains tthe valve 21 i may be obtained to 'meet therequlrements of automobile.

venlen'tly reached by .the part 81, V which different speeds .of the en gine.

Myylnvention is especially adapted for use in connection with automobile explosive engines, and when used in this connection the bracket 47 may be mountedon a suitable part of the automobile where it may be conthe automobile frame.

Iclaim: 1. In a carbureter the chamber having an air inlet' an inwardly the driver in order that .operate the lever 48 to prop?! different speeds of operating the automobile. have shown the bracket boss 80, which may re re- Athe. steeringpost o ravvings I have 43 to mount on may representa part of binationof a. opening therein opening valve closing sai opening, a stem projectngvfrom saidvalve and having a head .thereon,` a sleeve surrounding said stem and slidable longitudinally thereof, a lever having -an arm bearing against and operative to adjust Vsaid sleeve, a' spring encircling said stem and engaging said sleeve and said head, a collar surrounding said sleeve and provided with means operative to'adjust said collar longitudinal y of said sleeve, and a spring encircling said stein and engaging said collar and said head.

2. In a carbureter the combination of a chamber having-an air inlet opening therein, an inwardly opening valve closing said opening, a stem projecting from said valve and having ahead thereon,` rounding said stem and slidable longitudinally'thereof, means operative to adjustsaid sleeve, a spring encircling said stem and engaging said sleeve` andf said head, a collar surrounding said sleeve and slidably fitted.

thereto, said collar being screw-threaded. and screwed into a part mounted onsaidl chambei', whereby', the turningk of the collar will adjust it lon 'tudinlly ofthe. sleeve, means for holding t e collar 1n positions `of adjustment, and a sprin Aencirc engaging said col ar and said head.

In testimony whereof I afiix my signature in presence of two witnesses.

t i JOSEPH w. PARKI'N. Witnesses: I

WM. HAnRisoN SMITH, `E. M W

ARE.

Uopielot this Vpatentmay be obtained for ve .cents each, by addressing. the Commissioner ot Patents.

l Washington, .'I).Y U.

ing said stem andV a sleeve sur- 

